Quasi-entropy: in free energies and closure approximations

发布时间：2026-10-19 作者：浏览次数：

Speaker:	徐劼	DateTime:	2026年10月22日（周四）上午10:30-11:30
Brief Introduction to Speaker: 徐劼，中国科学院		Place:	6号楼C204
Abstract:Molecular-theory-based tensor models of liquid crystals typically contain an explicit entropy term deduced from the maximum entropy state. For dynamic models, high-order tensors also appear in the model, for which a classical closure approximation is also given the maximum entropy state. The maximum entropy state is able to maintain the essential properties and structures of the molecular theory in tensor models, but leads to high computational cost. Quasi-entropy is a class of elementary functions to substitute the terms deduced from the maximum entropy state, which can be incorporated both in free energies and in closure approximations. It not only keeps the desired properties and structures of the models, but also reduces the complexity of dealing with implicit functions involving three dimensional integrals to O(1). We present a few representative results in equilibrium states and dynamics.